Before you start on your long road to 1000g make a checklist of all these players. Then when you are playing your tournaments and you see a pro poker player you will be able to recognise and target them. When you encounter one, be relentless and save every time you win a hand by pausing. If you lose a bad hand or another player knocks out the pro poker player exit to your dashboard and reload your game. Keep trying until you knock them out as you may never see them again. DO NOT pause your game if you lose bad hand or someone else knocks them out. On the way to knocking out 25 of the 31 poker players you will also unlock the achievement for knocking out 10 pro poker players. Additionally, if you knockout all 31 pro poker players you will gain a complete chip series and that will help towards your chip series achievements. Knocking pro players out in Beat the Brat mode or cash games does not count towards the achievement; they have to be done in the WSOP multi-table tournaments.